Invention Grant
US08526485B2 Using equalization coefficients of end devices in a cable television network to determine and diagnose impairments in upstream channels
有权
使用有线电视网络中的终端设备的均衡系数来确定和诊断上游信道中的损伤
- Patent Title: Using equalization coefficients of end devices in a cable television network to determine and diagnose impairments in upstream channels
- Patent Title (中): 使用有线电视网络中的终端设备的均衡系数来确定和诊断上游信道中的损伤
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Application No.: US12565185Application Date: 2009-09-23
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Publication No.: US08526485B2Publication Date: 2013-09-03
- Inventor: Robert J. Thompson , Michael J. Cooper , Charles S. Moore , John L. Moran , Marc L. Morrissette
- Applicant: Robert J. Thompson , Michael J. Cooper , Charles S. Moore , John L. Moran , Marc L. Morrissette
- Applicant Address: US PA Horsham
- Assignee: General Instrument Corporation
- Current Assignee: General Instrument Corporation
- Current Assignee Address: US PA Horsham
- Agent Stewart M. Wiener
- Main IPC: H04L5/16
- IPC: H04L5/16 ; H04B17/00
Abstract:
A system estimates impairment contributions for upstream communications in a cable television system. The system receives equalization coefficients used by end devices in the cable television system. The equalization coefficients are used by equalizers to mitigate distortion in upstream channels for the end devices. The system analyzes the coefficients based on impairment thresholds to determine whether impairment problems exist and to identify the types of impairment problems that exist.
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